/Engine/Source/Developer/AutomationDriver/Public/IDriverSequence.h
Queues a move of the cursor over the element, then triggers the series of events to invoke a double click with the left mouse button
[IAsyncActionSequence](API\Developer\AutomationDriver\IAsyncActionSequence) & DoubleClick ( const [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [IElementLocator](API\Developer\AutomationDriver\IElementLocator), ESPMode::ThreadSafe > & ElementLocator )